The PIC of an A320 makes a precautionary landing when his right engine shows a slight loss of oil. Maintenance had changed the oil transmitter at his departure airport because of low oil readout. Diverted to lax, ca.

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Attributes
ACN	559338
Time
Date	200209
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : jli.vortac
State Reference	CA
Altitude	msl single value : 23000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zla.artcc
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : ns
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : atp pilot : multi engine
Experience	flight time last 90 days : 170 flight time total : 16500 flight time type : 1400
ASRS Report	559338
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper maintenance
Independent Detector	aircraft equipment other aircraft equipment : oil qu gage/ecam other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance flight crew : diverted to another airport flight crew : landed as precaution other
Consequence	other other other
Supplementary
Problem Areas	Maintenance Human Performance Flight Crew Human Performance Company Aircraft
Primary Problem	Aircraft

Narrative:

On the preceding flight, we made a logbook entry for an ECAM (electronic centralized aircraft monitor) display of low oil qty on engine #2. This happened the night before this flight. Maintenance made the necessary repairs which included replacing the oil transmitter and adding 12 qts of oil. We took off with 18 qts of oil in engine #2. During the climb, engine #2 oil qty began to decrease from a stabilized reading of 12.5 to 9 qts. Oil pressure and temperature were normal at this point. I contacted dispatch and decided to divert to lax as a precaution. Prior to the flight, I discussed with maintenance, and dispatch, our options if the low oil qty indication returned. As we descended, the oil qty increased and indicated 18 qts after engine shut down on the ground. Maintenance made a visual inspection and the aircraft was taken OTS for further inspection.

Original NASA ASRS Text

Title: THE PIC OF AN A320 MAKES A PRECAUTIONARY LNDG WHEN HIS R ENG SHOWS A SLIGHT LOSS OF OIL. MAINT HAD CHANGED THE OIL XMITTER AT HIS DEP ARPT BECAUSE OF LOW OIL READOUT. DIVERTED TO LAX, CA.

Narrative: ON THE PRECEDING FLT, WE MADE A LOGBOOK ENTRY FOR AN ECAM (ELECTRONIC CENTRALIZED ACFT MONITOR) DISPLAY OF LOW OIL QTY ON ENG #2. THIS HAPPENED THE NIGHT BEFORE THIS FLT. MAINT MADE THE NECESSARY REPAIRS WHICH INCLUDED REPLACING THE OIL XMITTER AND ADDING 12 QTS OF OIL. WE TOOK OFF WITH 18 QTS OF OIL IN ENG #2. DURING THE CLB, ENG #2 OIL QTY BEGAN TO DECREASE FROM A STABILIZED READING OF 12.5 TO 9 QTS. OIL PRESSURE AND TEMP WERE NORMAL AT THIS POINT. I CONTACTED DISPATCH AND DECIDED TO DIVERT TO LAX AS A PRECAUTION. PRIOR TO THE FLT, I DISCUSSED WITH MAINT, AND DISPATCH, OUR OPTIONS IF THE LOW OIL QTY INDICATION RETURNED. AS WE DSNDED, THE OIL QTY INCREASED AND INDICATED 18 QTS AFTER ENG SHUT DOWN ON THE GND. MAINT MADE A VISUAL INSPECTION AND THE ACFT WAS TAKEN OTS FOR FURTHER INSPECTION.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.